free rein

It gave students free rein to work at their own level, avoid boredom and show off their talents.

He has promised to abandon U.S. allies, including Ukraine, and give Israel free rein to, as he told Benjamin Netanyahu last month, “do what you have to do.”

As vice president, Vance would have free rein to shape federal policy within a Trump administration.

But a father or husband has free rein to dispose of his female property as he will.

Trump might very well want to give Musk free rein too and, if so, who's going to stop him?